Graphene triggered enhancement in visible-light active photocatalysis as well as in energy storage capacity of (CFO)1-x(GNPs)x nanocomposites

Israr, Muhammad; Iqbal, Javed; Arshad, Aqsa; Rani, Maria; Gómez‐Romero, Pedro; Benages, R.

doi:10.1016/j.ceramint.2019.09.232

Cited by 12 publications

(4 citation statements)

References 61 publications

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“…9 The results demonstrate that incorporating GNPs with MFO nanoparticles could considerably improve the photocatalytic efficiency up to a certain optimum GNPs loading ratio and then decreases beyond that ratio. The decrease in photocatalytic activity has been observed previously and might be because of the visible shielding produced by GNPs [72]. From the experimental results, it can be inferred that the degradation of MB dye is governed by the synergistic contribution of two possible mechanisms i.e., photocatalytic and photo-Fenton reaction as presented in Fig.…”

Section: Photocatalysissupporting

confidence: 67%

Multifunctional MgFe2O4/GNPs nanocomposite: Graphene-promoted visible light driven photocatalytic activity and electrochemical performance of MgFe2O4 nanoparticles

Israr

Iqbal

Arshad

et al. 2020

Solid State Sciences

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Herein, the electrochemical and photodegradation properties of magnesium ferrite and graphenenanoplatelets nanocomposites, (MFO)1-x(GNPs)x, (x = 0.25, 0.50, 0.75) are reported. Benefitting from the effective interfacial interaction of the bi-phase nanocomposite and superior electrical conduction of GNPs, a significant enhancement in supercapacitive performance has been demonstrated. Interestingly, the electrochemical properties of nanocomposite electrode were found to depend on the loading ratio of GNPs. Notably the (MFO)0.50(GNPs)0.50 (50 wt. % GNPs) showed an outstanding energy storage capacity of 612 F g -1 at 0.5 Ag -1 with 21.25 Wh kg -1 energy density at power density of 125 W kg -1 and retains ∼76.8% of the first cycle capacitance after continuous 1500 charge/discharge cycles. Furthermore, the (MFO)0.75(GNPs)0.25 (25 wt. % GNPs) composite demonstrates admirable photodegradation efficiency (99.3% in 60 min of visible light illumination) which is 3.2 times than that of neat MFO nanoparticles. The superior electrochemical and photodegradation performance suggest that the prepared nanocomposites can be effectively utilized in high-performance energy storage devices and low cost, eco-friendly water purification systems.

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Section: Photocatalysissupporting

confidence: 67%

Multifunctional MgFe2O4/GNPs nanocomposite: Graphene-promoted visible light driven photocatalytic activity and electrochemical performance of MgFe2O4 nanoparticles

Israr

Iqbal

Arshad

et al. 2020

Solid State Sciences

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“…Their study showed that the introduction of graphene increased the photocatalytic activity for the degradation of methylene blue from 38.3% to 98.7%. This was because graphene slowed down the recombination of electron-hole pairs in semiconductors [166]. Yan et al, (2020) prepared a graphene/polypyrrole composite and obtained a 94.8% removal efficiency of phenol using photocatalytic degradation [167].…”

Section: Photocatalysismentioning

confidence: 99%

A Review on Properties and Environmental Applications of Graphene and Its Derivative-Based Composites

et al. 2023

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Graphene-based materials have gained a lot of scientific interest in the research era of modern technology, which can be quite flexible. Graphene has become popular as a potential material for the manufacture of a wide range of technologies due to its remarkable electrical, mechanical, and optical traits. Due to these excellent characteristics, the derivatives of graphene can be functionalized in various applications including environmental, medical, electronic, defence applications, and many more. In this review paper, we discussed the different synthesis methods for the extraction of graphene and its derivatives. The different traits of graphene and its derivatives such as structural, mechanical, and optical were also discussed. An extensive literature review on the application of graphene-based composites is presented in this work. We also outlined graphene’s potential in the realm of environmental purification through different techniques such as filtration, adsorption, and photocatalysis. Lastly, the challenges and opportunities of graphene and its derivatives for advanced environmental applications were reported.

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“…So maximum number of electrons enter in conduction band from the grapheme. As a result higher concentration of GNPs provide more π-electrons to transfer the conduction band of CFO nanostructures (Israr et al, 2020).…”

Section: Uv-visible Spectroscopy Analysismentioning

confidence: 99%

Investigation of Dielectric, Magnetic and Electrical Behavior of BFO/GNPs Nano-Composites Synthesized via Sol-Gel Method

et al. 2022

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Nano composites of Ba0.5Bi0.5Nd0.05Fe0.95O3 multiferroic with graphene nano platelets (GNPs)x (x = 0, 0.125 %, 0.375 %, and 0.5 %) were synthesized using sol-gel auto ignition process. XRD analysis revealed a single rhombohedrally distorted phase of Ba0.5Bi0.5Nd0.05Fe0.95O3. The present study unfold the impact of GNPs on the structural, electrical, dielectric, and magnetic properties of Ba0.5Bi0.5Nd0.05Fe0.95O3 multiferroics. The substitution of Rare earth elements in pure BFO reduced the value of leakage current which is the basic drawback related with pure BFO. The prepared nanocomposites are then sintered at 800 °C for 7 hrs. The X-ray diffraction patterns showed the rhombohedral distorted perovskite crystal structure of the prepared samples including lattice constant, crystallite size, and X-ray density. The average crystallite sizes of the prepared nanocomposites are noticed in the range 28.14 -to 29.74 nm with increasing the GNPs concentration and lattice constant is found in the range 11.59 -to 11.61 Å. Temperature-dependent resistivity is first observed to increase with an increase in temperature then resistivity decreased with increasing the temperature which indicates a semi-conductor-like behavior as measured by two probe I-V characteristics. LCR technique showed that both the dielectric constant and the dissipation factor are decreased with an increase in frequency. VSM results indicated that saturation magnetization is noted to increase while remanent magnetization decreases with increasing concentration of GNPs.

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Graphene triggered enhancement in visible-light active photocatalysis as well as in energy storage capacity of (CFO)1-x(GNPs)x nanocomposites

Abstract: triggered enhancement in visible-light active photocatalysis as well as in energy storage capacity of (CFO)1-x(GNPs)x nanocomposites. Ceramics International, (2020). 46.

Cited by 12 publications

References 61 publications

Multifunctional MgFe2O4/GNPs nanocomposite: Graphene-promoted visible light driven photocatalytic activity and electrochemical performance of MgFe2O4 nanoparticles

Multifunctional MgFe2O4/GNPs nanocomposite: Graphene-promoted visible light driven photocatalytic activity and electrochemical performance of MgFe2O4 nanoparticles

A Review on Properties and Environmental Applications of Graphene and Its Derivative-Based Composites

Investigation of Dielectric, Magnetic and Electrical Behavior of BFO/GNPs Nano-Composites Synthesized via Sol-Gel Method

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